You are going grocery shopping and buy x pounds of grapes for $1.99 per pound and y pounds of

Mathematics

1 answer:

mario62 [17]3 years ago

8 0

Answer:

$9.00

Step-by-step explanation:

because its from a store

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What are the vertex and axis of symmetry of the parabola y = x2 – 16x + 63?

jonny [76]

Answer:

Step-by-step explanation:

Remember that the x-value of the vertex when an equation is given in standard form can be found with the equation $\frac{-b}{2a}$ . So, we can take the coefficients from the equation and plug them in.

$\frac{-b}{2a} \\\frac{-(-16)}{2(1)}\\\\\frac{16}{2}\\\\8$

Now we know that the x-value of the vertex is 8. Next, the equation for the y-value is $c-ah^2$ , where h is the x-value of the vertex (8).

$(63)-(1)(8)^2\\63-64\\-1$

So the vertex is (8,-1).

Finally, the axis of symmetry is the x-value of the vertex, also called h.

Final answer, vertex: (8,-1) and axis of symmetry: x=8

Hope this helps!

3 0

3 years ago

Find the midpoint of the segment with the following endpoints. (8,5) and (0, -1)

Karo-lina-s [1.5K]

Answer:

(4,2)

Step-by-step explanation:

$Midpoint =\left(\frac{x_2+x_1}{2},\:\:\frac{y_2+y_1}{2}\right)\\\\\left(x_1,\:y_1\right)=\left(8,\:5\right),\:\\\left(x_2,\:y_2\right)=\left(0,\:-1\right)\\\\=\left(\frac{0+8}{2},\:\frac{-1+5}{2}\right)\\\\= (\frac{8}{2} , \frac{4}{2} )\\\\Simplify\\=\left(4,\:2\right)$